The $^8$B Neutrino Spectrum

Details The $^8$B Neutrino Spectrum The $^8$B Neutrino Spectrum

2004-06-17

arxiv.org/abs/nucl-ex/0406019v2

Phys.Rev. C73 (2006) 025503

Physics

Nuclear Physics

Nuclear Experiment

15 pages, 13 figures, 4 tables, submitted to Phys. Rev. C, typos corrected

Scientific paper

Knowledge of the energy spectrum of $^8$B neutrinos is an important ingredient for interpreting experiments that detect energetic neutrinos from the Sun. The neutrino spectrum deviates from the allowed approximation because of the broad alpha-unstable $^8$Be final state and recoil order corrections to the beta decay. We have measured the total energy of the alpha particles emitted following the beta decay of $^8$B. The measured spectrum is inconsistent with some previous measurements, in particular with a recent experiment of comparable precision. The beta decay strength function for the transition from $^8$B to the accessible excitation energies in $^8$Be is fit to the alpha energy spectrum using the R-matrix approach. Both the positron and neutrino energy spectra, corrected for recoil order effects, are constructed from the strength function. The positron spectrum is in good agreement with a previous direct measurement. The neutrino spectrum disagrees with previous experiments, particularly for neutrino energies above 12 MeV.

Affiliated with

Also associated with

No associations

Rating

The $^8$B Neutrino Spectrum does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The $^8$B Neutrino Spectrum, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The $^8$B Neutrino Spectrum will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-178420